The Resource Calendars template documents the availability of each project resource across the project timeline. In the PMBOK Guide 8th Edition, resource calendars are a key output of the Acquire Resources process within the Resources Performance Domain. A detailed resource calendar template shows when each team member and physical resource is available, accounting for vacations, training, shared assignments, and organizational commitments.

Why You Need a Resource Calendar Template

Schedule delays often stem from resource unavailability that was not anticipated during planning. A comprehensive resource calendar template captures the actual availability of every project resource on a monthly basis, making it possible to identify periods of reduced capacity before they affect the critical path. By overlaying resource calendars with the project schedule, project managers can perform realistic resource leveling and identify the need for additional resources during peak demand periods. This resource calendar template is essential for projects with shared resources, distributed teams, or seasonal availability patterns.

Template Sections

This resource calendar template is an Excel spreadsheet with the following structure:

1. Resource Name — Team member or physical resource identifier
2. Role / Type — Resource classification
3. Monthly Availability Grid — 12-month grid showing available hours or days per month for each resource
4. Unavailability Reasons — Vacation, training, other project commitments, holidays
5. Total Available Hours — Auto-calculated annual and period totals per resource
6. Conditional Formatting — Visual highlighting for periods of reduced or zero availability

PMBOK 8 Features

• Monthly Availability Grid — Visual monthly view that integrates with project scheduling tools and supports resource leveling decisions
• Conditional Formatting for Unavailability — Red highlighting for zero-availability periods and yellow for reduced availability, enabling quick identification of resource constraints
• Auto-Calculated Totals — Built-in formulas that sum available hours by resource and by month, providing capacity snapshots
• Multi-Resource View — All resources visible in a single view, supporting portfolio-level resource management aligned with PMBOK 8 principles

Related PMBOK 8 Templates

Complete your resource management toolkit with these related templates:

• Resource Management Plan — PMBOK 8
• Project Team Assignments — PMBOK 8

Format: Microsoft Excel (.xlsx) | PMBOK Edition: 8th (2025) | Domain: Resources | Process: Acquire Resources